Sediment and Stormwater Regulatory Guidance Memorandum RGM-3

Division of Watershed Stewardship

Published: Aug. 1, 2022
Comments Due: Aug. 15, 2022

The Department of Natural Resources and Environmental Control (DNREC) Division of Watershed Stewardship Sediment and Stormwater Program has released a regulatory guidance document titled “Regulatory Guidance Memorandum RGM-3” for public review. This document supports Regulation No. 5101 Sediment and Stormwater Regulations, as set forth at 7 Del.C. §4006(h) and (i).

A synopsis of RGM-3 is as follows: The Sediment and Stormwater Program rescinds the adoption of the Appoquinimink River Watershed Stormwater Management Plan’s standards and criteria for stormwater control, as they have been deemed redundant with the 2019 Sediment and Stormwater Regulations. Projects within the boundaries of the Appoquinimink Watershed will no longer be required to comply with the Appoquinimink River Watershed Stormwater Management Plan Standards and Criteria for Stormwater Control. Projects within the Appoquinimink Watershed shall comply with the stormwater management criteria contained in the 2019 Sediment and Stormwater Regulations.

The DNREC Sediment and Stormwater Program hereby provides notice of this regulatory guidance document, pursuant to 7 Del.C. §4006(i), which incorporates the provisions of 7 Del.C. §6004. A public hearing will NOT be held unless the Secretary receives a meritorious request for a hearing within 15 days of date of this notice, ending August 15, 2022. A request for a public hearing shall be in writing and show familiarity with the regulatory guidance document and provide a reasoned statement of the regulatory guidance document’s probable impact.

This document may be reviewed at the following link:

Questions regarding the revised regulatory guidance documents may be directed to Elaine Webb,